A company is aware that the mean cost of repairs on production machines is at least $625
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A company is aware that the mean cost of repairs on production machines is at least $625 a week. After a program to train employees on using the machines more effectively, the next 25 weeks are sampled and a mean of $600 and a standard deviation of $34.37 is obtained. Test if the training program worked at a significance level of 0.01, if the costs follow a normal distribution.
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To test whether the training program had a significant effect on the mean cost of repairs we can use ...View the full answer
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Related Book For 
Principles Of Managerial Statistics And Data Science
ISBN: 9781119486411
1st Edition
Authors: Roberto Rivera
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